Locking mechanism for adaptor assembly of a server rack chassis

ABSTRACT

A locking mechanism includes a latch, a handle, a first link, and a second link. The latch to engage with a recess of a server rack chassis, and to lock an adaptor assembly within the server rack chassis. The handle is connected to the latch, and engages and disengages the latch with the recess. The first link includes a first stub. The first link puts the first stub in an up position in response to the handle being in a down position, and puts the first stub in a down position in response to the handle being in an up position. The second link includes a second stub. The second link puts the second stub in a down position in response to the handle being in the down position, and puts the second stub in an up position in response to the handle being in the up position.

FIELD OF THE DISCLOSURE

This disclosure generally relates to information handling systems, andmore particularly relates to a locking mechanism for an adaptor assemblyfor a server rack chassis.

BACKGROUND

As the value and use of information continues to increase, individualsand businesses seek additional ways to process and store information.One option is an information handling system. An information handlingsystem generally processes, compiles, stores, and/or communicatesinformation or data for business, personal, or other purposes. Becausetechnology and information handling needs and requirements can varybetween different applications, information handling systems can alsovary regarding what information is handled, how the information ishandled, how much information is processed, stored, or communicated, andhow quickly and efficiently the information can be processed, stored, orcommunicated. The variations in information handling systems allow forinformation handling systems to be general or configured for a specificuser or specific use such as financial transaction processing, airlinereservations, enterprise data storage, or global communications. Inaddition, information handling systems can include a variety of hardwareand software components that can be configured to process, store, andcommunicate information and can include one or more computer systems,data storage systems, and networking systems.

A server rack chassis can hold multiple devices, such as servers, powersupplies, hard drive bays, and the like. Each of the servers, powersupplies, and hard drive bays usually includes a mechanism to install orremove the device. The mechanism may also be used to lock the device inplaced with the server rack chassis.

BRIEF DESCRIPTION OF THE DRAWINGS

It will be appreciated that for simplicity and clarity of illustration,elements illustrated in the Figures have not necessarily been drawn toscale. For example, the dimensions of some of the elements areexaggerated relative to other elements. Embodiments incorporatingteachings of the present disclosure are shown and described with respectto the drawings presented herein, in which:

FIG. 1 is a perspective view of a server rack chassis;

FIG. 2 is a perspective view of an adaptor assembly of the server rackchassis;

FIG. 3 is cross sectional view of the adaptor assembly including alocking mechanism in a first position;

FIG. 4 is cross sectional view of the adaptor assembly including thelocking mechanism in a second position;

FIG. 5 is cross sectional view of the adaptor assembly including thelocking mechanism in a third position;

FIG. 6 is cross sectional view of the adaptor assembly including thelocking mechanism in a fourth position;

FIG. 7 is a flow diagram of a method for inserting the adaptor assemblywithin a bay of the server rack chassis; and

FIG. 8 is a flow diagram of a method for releasing the locking mechanismof the adaptor assembly.

The use of the same reference symbols in different drawings indicatessimilar or identical items.

DETAILED DESCRIPTION OF DRAWINGS

The following description in combination with the Figures is provided toassist in understanding the teachings disclosed herein. The followingdiscussion will focus on specific implementations and embodiments of theteachings. This focus is provided to assist in describing the teachingsand should not be interpreted as a limitation on the scope orapplicability of the teachings. However, other teachings can certainlybe utilized in this application.

FIG. 1 shows a perspective view of a server rack chassis 100 for aninformation handling system. For purposes of this disclosure, theinformation handling system may include any instrumentality or aggregateof instrumentalities operable to compute, classify, process, transmit,receive, retrieve, originate, switch, store, display, manifest, detect,record, reproduce, handle, or utilize any form of information,intelligence, or data for business, scientific, control, entertainment,or other purposes. For example, an information handling system may be apersonal computer, a PDA, a consumer electronic device, a network serveror storage device, a switch router or other network communicationdevice, or any other suitable device and may vary in size, shape,performance, functionality, and price. The information handling systemmay include memory, one or more processing resources such as a centralprocessing unit (CPU) or hardware or software control logic. Additionalcomponents of the information handling system may include one or morestorage devices, one or more communications ports for communicating withexternal devices as well as various input and output (I/O) devices, suchas a keyboard, a mouse, and a video display. The information handlingsystem may also include one or more buses operable to transmitcommunications between the various hardware components.

The server rack chassis 100 includes bays 102 for receiving servers 104and 106, and an adaptor assembly 110. In an embodiment, the server rackchassis 100 can be a blade server rack, the servers 104 and 106 can beblade servers, and the adaptor assembly 110 can be a blade serveradaptor to enable blade servers that could not otherwise fit well withinthe bay 102 to connect with the server rack chassis. The adaptorassembly 110 includes an enclosure 112, a guide rail 114, a plate 116,and rails 118. The plate 116 is mounted within the middle of enclosure112 to provide structural support to the enclosure, and the rails 118are mounted on the inside of the walls to provide alignment and supportof servers 120 within the enclosure. The adaptor assembly 110 can bedesigned to receive multiple servers 120. In an embodiment, the server104 can be a full height server, the servers 106 can be half heightservers, and the server 120 can be a quarter height server. With respectto this disclosure, full height indicates that the server is about theheight of the bay 102, half height indicates that the server is abouthalf of the height of the bay, and quarter height indicates that theserver is about a quarter of the height of the bay. While theembodiments are discussed with respect to a blade server chassis andblade servers, the adaptor assembly 110 can be used to provide alignmentfor any type of device within any type of chassis.

In an embodiment, each bay 102 of the server rack chassis 100 canreceive multiple servers. For example, the bay 102 can receive twoservers 104, one server 104 and two servers 106, or four servers 106.Additionally, the adaptor assembly can take up substantially the sameamount of space in the bay 102 as the server 104, such that the bay canreceive two adaptor assemblies 110. However because each bay 102 canvary in size, the number of servers 104 and 106, and the number ofadaptor assemblies 110 that can fit within a single bay can also vary.

The guide rail 114 can align with a chassis rail 122 of the server rackchassis 100 to align the adaptor assembly 110 within the bay 102. Theadaptor assembly 110 can then slide into the bay 102 at a desiredorientation based upon the guide rail 114 sliding along the chassis rail122. The adaptor assembly 110 can be locked into place within the bay102 via a locking mechanism 202, shown in FIG. 2. After the adaptorassembly 110 is locked into place within the bay 102, one or moreservers 120 can be inserted into the adaptor assembly and connected to abackplane of the server rack chassis 100. The locking mechanism 202 isconfigured to fit within a void of the enclosure 112 between a server120 and the server rack chassis 100.

FIG. 2 shows the adaptor assembly 110 including the locking mechanism202, the enclosure 112, and the guide rail 114. The locking mechanism202 includes a frame 204 a handle 206, a latch 208, a release 210, anarm 212, a first link 214, a second link 216, connector pins 218, 220,222, 224, 226, and 228, and grooves 230. The first link 214 includes astub 232. The second link 216 includes stubs 234. The frame 204 isconnected to the enclosure 112 and is located in the void in front of atop portion of the enclosure and the guide rail 114. The handle 206 andthe release 210 are coupled together, and connect with the arm 212 viathe connector pin 218. The latch 208 is connected to the arm 212 via theconnector pin 220. The arm 212 is connected to the frame 204 viaconnector pin 222, and to the first link 214 via connector pin 224. Thefirst link 214 is connected to the second link 216 via connector pin226. Each end of the connector pin 226 extends beyond the first andsecond links and fits within the grooves 230 on each side of the frame204. The connector pin 228 extends from the second link 216 and fitswithin the grooves 230 of the frame 204.

FIGS. 3-6 show the server rack chassis 100, the adaptor assembly 110,and the locking mechanism 202 taken along the line A-A of FIG. 2. Theserver rack chassis 100 includes a chassis plate 302 that includes tabs304 and 306. The locking mechanism 202 includes a spring 308 locatedwithin arm 212. The spring 308 provides a constant force on the latch208, such to bias the latch in a locked position. In an embodiment, thelatch 208 is perpendicular to the handle 206 while in the lockedposition.

The handle 206 and the arm 212 are preferably placed in a down positionwhen the adaptor assembly 110 is inserted into the bay 102 of the serverrack chassis 100. The handle 206 and the arm 212 can be placed in thedown position by rotating the arm downwardly from the frame 204 via theconnector pin 224. As the handle 206 and the arm 212 rotate downward thefirst and second links 214 and 216 are pushed backward in the frame 204as a result of a force exerted by the arm on the first link via theconnector pin 222. The first and second links 214 and 216 slidebackwards in the frame 204 as a result of the connector pins 226 and 228sliding in the groove 230. In an embodiment, a first portion of thegroove 230 is parallel with the frame 204, and a second portion of thegroove angles down and to the back of the frame as shown in FIG. 2.Thus, as the first and second links 214 and 216 slide backwards in theframe 230, the connector pin 228 slides down the angle of the groove sothat the stubs 234 of the second link drop below a top edge of the frameas shown in FIG. 3. Also, as the handle 206 and the arm 212 drop to thedown position, the first link 214 is angled upward and the stub 232 ofthe first link extends above the top edge of the frame 204.

The adaptor assembly 110 then slides into the bay 102 of the server rackchassis 100 until the stub 232 engages the stub 306 of the chassis plate302. The contact between the stub 232 and the stub 306 indicates thatthe adaptor assembly 110 has been placed in a first position within theserver rack chassis 100. When the adaptor assembly 110 has been placedin the first position, the handle 206 and the arm 212 can be raisedupward from the down position toward a locked position. As the handle206 and the arm 212 are raised, the arm exerts a force on the first link214 via the connector pin 222 to pull the first link and the secondforward in the frame 204. While the handle 206 and the arm 212 are beingpulled up, the connector pins 226 and 228 slide forward within thegroove 230, such that both of the connector pins are located within thefirst portion of the groove. When the connector pins 226 and 228 arewithin the first portion of the groove 230, the first link 214 and thesecond link 216 are both substantially parallel with the chassis plate302. As the first link 214 moves forward within the frame 204, the stub232 moves away from the stub 306 as shown in FIG. 4.

The handle 206 and the arm 212 can continue to be raised up so that thelatch 208 can be placed in physical communication with a hook portion502 around a recess of the server rack chassis 100. As the handle 206and the arm 212 continue to be raised up toward the top of the serverrack chassis 100, the first link 214 and the second link 216 cancontinue to move forward in the frame 204. The movement of the first andsecond links 214 and 216 can cause the stub 234 to move up within anopening 402 of the chassis plate 302. Also, as the handle 206 is raisedcloser to the server rack chassis 100, a force can be applied to thelatch 208 so that the latch can flex away from the hook portion 502 anda lip 506 of the latch can be placed in physical communication with thehook portion 502 of the server rack chassis 100 as shown in FIG. 5.

The flexing of the latch 208 can exert a force on the spring 308, whichin turn can increase the compression on the spring. When the lip 506 ofthe latch 208 passes the hook portion 502 of the recess 504, the spring308 can push back on the latch 208 and cause the latch to snap aroundthe lip of the recess. Also, at substantially the same time as the latch208 snaps within the recess 504, the stub 234 of the second link 216 canengage a front edge of the opening 402 of the chassis plate 302. As thestub 234 is placed in physical communication with the front edge of theopening 402, the locking mechanism 202 can pull adaptor assembly 110further into the bay 102 of the server rack chassis 100, such that theadaptor assembly is placed in a second position. Thus, when the latch208 is in a locked position, the lip 506 of the latch has snapped aroundthe hook portion 502 of the recess 504, the adaptor assembly 110 ispreferably fully inserted into the bay 102 of the server rack chassis.

The release 210 can be utilized to unlock the locking mechanism 202 fromthe server rack chassis 100. For example, the release 210 can be pressedtogether so that the handle 206 can be pulled forward and extended fromthe release and the arm 212. The extension of the handle 206 can pull abottom portion of the latch 208, which in turn can cause the latch toflex away from the hook portion 502. Thus, when the handle 206 is fullyextended the lip 506 can be clear of the hook portion 502 of the recess504, such that the locking mechanism 202 can be pulled downwardly fromthe recess of the server rack chassis 100. As the handle 206 and the arm212 are placed in the down position, the stub 234 of the second link 216can be removed from physical communication with the front edge of theopening 402 of the chassis plate 302 while the stub 232 of the firstlink 214 can be placed in physical communication with the stub 306 ofthe chassis plate. The stub 232 can exert a force against the stub 306so as to push the adaptor assembly 110 into the first position withinthe bay 102 as shown in FIG. 3. After the adaptor assembly 110 is placedin the first position, the adaptor assembly can then be completelyremoved from the server rack chassis 100.

FIG. 7 shows a flow diagram of a method 700 for inserting an adaptorassembly within a bay of a server rack chassis. At block 702, theadaptor assembly is slid into the bay until the adaptor assembly isplaced in a first position within the server rack chassis. A guide railof the adaptor assembly can slide along a chassis rail while the adaptorassembly is inserted into the bay to ensure that the adaptor assembly isproperly aligned in the bay. The first position of the adaptor assemblywithin the server rack chassis can be when a stub of a first link of alocking mechanism is placed in physical communication with a stub of achassis plate in the server rack chassis. A handle and an arm of thelocking mechanism are raised upward at block 704.

At block 706, the stub of the first link is removed from the physicalcommunication with the stub of the chassis plate. A latch of the lockingmechanism is placed in physical communication with a lip of a recess inthe server rack chassis at block 708. At block 710, the latch is flexedaway from the lip of the recess as the handle and the arm are continuedto be raised upward. A stub of a second link of the locking mechanism isplaced in physical communication with the stub of the chassis plate atblock 712. At block 714, the stub of the second link exerts a forceagainst the stub of the chassis plate, which causes the adaptor assemblyto be placed at a second position within the server rack chassis. Thelatch snaps around the lip of the recess, such that the lockingmechanism and the latch are placed in a locked position at block 716.

FIG. 8 shows a flow diagram of a method 800 for releasing a lockingmechanism of an adaptor assembly. At block 802, a release is pressed anda handle is extended from the locking mechanism. A latch of the lockingmechanism is flexed away from a lip of a server rack chassis in responseto the handle being extended at block 804. At block 806, a handle and anarm of the locking mechanism can be pushed downward. A stub of a firstlink of the locking mechanism is pushed against a stub of a chassisplate in response to the handle and the arm of the locking mechanismbeing placed in a down position at block 808.

At block 810, the adaptor assembly is moved from a first position to asecond position within the bay of the server rack chassis in response tothe stub of the first link being pushed against the stub of the chassisplate. In an embodiment, the adaptor assembly is in the first positionwhen the adaptor assembly is all the way inside the server rack chassisand the second position is locking enable position for the adaptorassembly such that the adaptor has not been completely inserted withinthe server rack chassis. At block 812, the adaptor assembly iscompletely removed from the bay of the server rack chassis.

Although only a few exemplary embodiments have been described in detailin the exemplary embodiments without materially departing from the novelteachings and advantages of the embodiments of the present disclosure.Accordingly, all such modifications are intended to be included withinthe scope of the embodiments of the present disclosure as defined in thefollowing claims. In the claims, means-plus-function clauses areintended to cover the structures described herein as performing therecited function and not only structural equivalents, but alsoequivalent structures.

What is claimed is:
 1. A locking mechanism comprising: a latch to engagewith a recess of a server rack chassis, and to lock an adaptor assemblywithin the server rack chassis; a handle connected to the latch, thehandle to engage and disengage the latch with the recess; a first linkincluding a first stub, the first link to put the first stub in an upposition in response to the handle being in a down position, and to putthe first stub in a down position in response to the handle being in anup position; a second link including a second stub, the second link toput the second stub in a down position in response to the handle beingin the down position, and to put the second stub in an up position inresponse to the handle being in the up position; a spring connected tothe latch, the spring to bias the latch in a locked position; whereinthe first stub is placed in physical communication with a third stub ofa chassis plate in the server rack chassis when the adaptor assembly isin a first position within the server rack chassis, the second stubengages the third stub of the chassis plate in the server rack chassiswhen the latch snaps within the recess, wherein the second stub pullsthe adaptor assembly further into the server rack chassis and places theadaptor assembly in a second location when the latch is placed in thelocked position.
 2. The locking mechanism of claim 1 wherein the latchdeflects away from the recess until a hook portion of the latch isbeyond a lip of the recess and snaps back to the locked position whenthe hook portion is beyond the lip.
 3. The locking mechanism of claim 1wherein the first stub is pushed against the third stub of the serverrack chassis to reject an adaptor assembly from the server rack chassiswhen the handle is in a down position.
 4. The locking mechanism of claim1 further comprising: a frame to connect the first link to an arm thatis connected to the handle, and to connect the first link with thesecond link, wherein the frame controls the first link and the secondlink to rotate in opposite directions.
 5. The locking mechanism of claim1 further comprising: a release connected to the handle and to thelatch, the release to cause the latch to move to an unlock position inresponse to the release being in an extended position.
 6. An adaptorassembly comprising: an enclosure configured to be placed within aserver rack chassis and to receive a quarter height server; and alocking mechanism in physical communication with the enclosure, thelocking mechanism including: a latch to engage with a recess of a serverrack chassis, and to lock the adaptor assembly within the server rackchassis; a handle connected to the latch, the handle to engage anddisengage the latch into a locked position within the recess; a firstlink including a first stub, the first link to put the first stub in anup position in response to the handle being in a down position, and toput the first stub in a down position in response to the handle being inan up position; and a second link including a second stub, the secondlink to put the second stub in a down position in response to the handlebeing in the down position, and to put the second stub in an up positionin response to the handle being in the up position; wherein the firststub is placed in physical communication with a third stub of a chassisplate in the server rack chassis when the adaptor assembly is in a firstposition within the server rack chassis, the second stub engages thethird stub of the chassis plate in the server rack chassis when thelatch snaps within the recess, wherein the second stub pulls the adaptorassembly further into the server rack chassis and places the adaptorassembly in a second location when the latch is placed in the lockedposition.
 7. The adaptor assembly of claim 6 wherein the latch deflectsaway from the recess until a hook portion of the latch is beyond a lipof the recess and snaps back to the locked position when the hookportion is beyond the lip.
 8. The adaptor assembly of claim 6 whereinthe first stub is pushed against the third stub of the server rackchassis to reject an adaptor assembly from the server rack chassis whenthe handle is in a down position.
 9. The adaptor assembly of claim 6wherein the locking mechanism further comprises: a release connected tothe handle and to the latch, the release to cause the latch to move toan unlock position in response to the release being in an extendedposition.
 10. A server rack chassis comprising: a bay configured toreceive a full height server; an enclosure inserted within the bay, theenclosure to receive a quarter height server; and a locking mechanism inphysical communication with the enclosure, the locking mechanismincluding: a latch to engage with a recess of the server rack chassis,and to lock an adaptor assembly within the server rack chassis; a handleconnected to the latch, the handle to engage and disengage the latchwith the recess; a first link including a first stub, the first link toput the first stub in an up position in response to the handle being ina down position, and to put the first stub in a down position inresponse to the handle being in an up position; and a second linkincluding a second stub, the second link to put the second stub in adown position in response to the handle being in the down position, andto put the second stub in an up position in response to the handle beingin the up position; wherein the first stub is placed in physicalcommunication with a third stub of a chassis plate in the server rackchassis when the adaptor assembly is in a first position within theserver rack chassis, the second stub engages the third stub of thechassis plate in the server rack chassis when the latch snaps within therecess, wherein the second stub pulls the adaptor assembly further intothe server rack chassis and places the adaptor assembly in a secondlocation when the latch is placed in the locked position.
 11. The serverrack of claim 10 wherein the latch deflects away from the recess until ahook portion of the latch is beyond a lip of the recess and snaps backto the locked position when the hook portion is beyond the lip.
 12. Theserver rack of claim 10 wherein the first stub is pushed against thethird stub of the server rack chassis to reject an adaptor assembly fromthe server rack chassis when the handle is in a down position.
 13. Theserver rack of claim 10 further comprising: a frame to connect the firstlink to an arm that is connected to the handle, and to connect the firstlink with the second link, wherein the frame controls the first link andthe second link to rotate in opposite directions.